Hyunsik Choi created TAJO-1049:
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Summary: Remove the parallel degree limit up to the maximum
cluster capacity
Key: TAJO-1049
URL: https://issues.apache.org/jira/browse/TAJO-1049
Project: Tajo
Issue Type: Improvement
Components: data shuffle, distributed query plan
Reporter: Hyunsik Choi
Assignee: Hyunsik Choi
Priority: Trivial
Fix For: 0.9.0
The maximum parallel degree had been limited by the number of cluster node
capacity. This was because the old hash shuffle approach created too many small
files depending on the number of parallel degree of a stage.
But, TAJO-992 solved this problem. We don't need to use this limit anymore.
This patch removes the limit.
I think that this patch requires cluster test and it is hard to verify this
patch in unit tests.
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